Autonomous system profile

Review registration details, announced prefixes, network relationships and historical snapshots.

AS27595

Announcement observedARIN

Columbia College Chicago · COLUM-600

This profile is assembled from CHA.LA's normalized registration, routing and observation snapshots.

Last active10/1/2026, 23:24:12Snapshot expired

View network topology RDAP registration

ASN: AS27595
Registration country: United States
Name: Columbia College Chicago
Abbreviation: COLUM-600
Registration date: 3/9/2011, 20:11:07
Status: Announcement observed
RIR: ARIN

Network relationships and announced prefixes

ASN / prefix	Description / organization	Geographic scope	First seen	Last active	IPv4	IPv6	Status
199.168.232.0/22BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 16:00:00	10/30/2026, 08:00:00	✓	×	Currently valid
199.168.236.0/22BGP · IPv4	Announced prefixBGP route observation	Not applicable · BGP prefix	9/17/2026, 16:00:00	10/30/2026, 08:00:00	✓	×	Currently valid

BGP prefixes have no geographic country; the column is marked not applicable.

Registration and sources

Organization: Columbia College Chicago
RIR: ARIN
Registration country: United States
Registration date: 3/9/2011, 20:11:07
Abuse contact: robruiz@colum.edu

Snapshot trend

10/1/2026, 23:24:122 v40 v62 Upstream · 0 Uncertain

ASN route snapshotThis page reads collected ASN, prefix, relationship and history data. External interfaces are used for initial collection and scheduled refreshes.Source keys: cha-la-external-routing · iana-rdap-asn-bootstrap · rir-rdap-asn